Inflammatory bowel disease patients who failed from at least two types of biologics or suffered refractory after at least twice surgery are defiened as difficult-to-treat IBD. It is reported a low five-year suvival rate around 15% of difficult-to-treat IBD patients. Cell therapy is a promising new strategy in auto-immune diseases beyond malignant cancers. Inbalanced immune microenvironment contribute to IBD and cell therapy should be a brighting selection of difficult-to-treat IBD. CNK-UT009 is an universal cellular immunotherapy targeted to auto-reactive T cells whose safety and effect were proved in patients with GVHD and type 1 diabetes mellius. Here, we conducted a single-arm open-label exploratory clinical study of CNK-UT cell therapy on difficult-to-treat IBD patients, mainly to explore the safety and define the maximum tolerated dose. Besides, the preliminary effect would also be evaluated.
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maximum tolerant dose(MTD)
Timeframe: 12 weeks after first injection
rate of DLT(dose-limiting toxicity)
Timeframe: 12 weeks after first injection